Host Ellen DeGeneres explains that the tasks — such as tossing kegs, flipping giant tires, pulling a cart full of women, and deadlifting — are all taken from real strongman challenges. The caveat here is that once Gyllenhaal completes them he would earn a check for $10,000 from Shutterfly to the charity of Bauman's choosing, which is 50 Legs.

According to its site, 50 Legs is a charity founded by Steve Chamberland that "provides quality prosthetic legs to children, adults, and military wishing to live an active lifestyle." 50 Legs also notes that it was one of the first organizations to provide help and support to victims of the Boston Marathon bombings — explaining Bauman's connection to them.

Stronger — which is in theaters as of today — tells the real-life story of how Bauman was affected by the Boston Marathon bombings of 2013, losing his legs in the process. Bauman had to teach himself to walk again using the prosthetic legs he was given by doctors. This man became a symbol of hope after the tragedy and actually helped identify the culprits. Orphan Black star Tatiana Maslany also stars as Bauman's former girlfriend and now-wife Erin Hurley.

See the full clip of Gyllenhaal completing the Boston Strongman Challenge here: